1 files changed, 123 insertions, 0 deletions
diff --git a/browser/extensions/screenshots/background/startBackground.js b/browser/extensions/screenshots/background/startBackground.js
new file mode 100644
index 0000000000..afb2d0eb65
--- /dev/null
+++ b/browser/extensions/screenshots/background/startBackground.js
@@ -0,0 +1,123 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* globals browser, main, communication, manifest */
+
+/* This file handles:
+     clicks on the WebExtension page action
+     browser.contextMenus.onClicked
+     browser.runtime.onMessage
+   and loads the rest of the background page in response to those events, forwarding
+   the events to main.onClicked, main.onClickedContextMenu, or communication.onMessage
+*/
+
+const startTime = Date.now();
+
+// Set up to be able to use fluent:
+(function() {
+  let link = document.createElement("link");
+  link.setAttribute("rel", "localization");
+  link.setAttribute("href", "browser/screenshots.ftl");
+  document.head.appendChild(link);
+
+  link = document.createElement("link");
+  link.setAttribute("rel", "localization");
+  link.setAttribute("href", "browser/branding/brandings.ftl");
+  document.head.appendChild(link);
+})();
+
+this.getStrings = async function(ids) {
+  if (document.readyState != "complete") {
+    await new Promise(resolve =>
+      window.addEventListener("load", resolve, { once: true })
+    );
+  }
+  await document.l10n.ready;
+  return document.l10n.formatValues(ids);
+};
+
+let zoomFactor = 1;
+this.getZoomFactor = function() {
+  return zoomFactor;
+};
+
+this.startBackground = (function() {
+  const exports = { startTime };
+
+  const backgroundScripts = [
+    "log.js",
+    "catcher.js",
+    "blobConverters.js",
+    "background/selectorLoader.js",
+    "background/communication.js",
+    "background/senderror.js",
+    "build/shot.js",
+    "build/thumbnailGenerator.js",
+    "background/analytics.js",
+    "background/deviceInfo.js",
+    "background/takeshot.js",
+    "background/main.js",
+  ];
+
+  browser.experiments.screenshots.onScreenshotCommand.addListener(
+    async type => {
+      try {
+        let [[tab]] = await Promise.all([
+          browser.tabs.query({ currentWindow: true, active: true }),
+          loadIfNecessary(),
+        ]);
+        zoomFactor = await browser.tabs.getZoom(tab.id);
+        if (type === "contextMenu") {
+          main.onClickedContextMenu(tab);
+        } else if (type === "toolbar") {
+          main.onClicked(tab);
+        } else if (type === "shortcut") {
+          main.onShortcut(tab);
+        }
+      } catch (error) {
+        console.error("Error loading Screenshots:", error);
+      }
+    }
+  );
+
+  browser.runtime.onMessage.addListener((req, sender, sendResponse) => {
+    loadIfNecessary()
+      .then(() => {
+        return communication.onMessage(req, sender, sendResponse);
+      })
+      .catch(error => {
+        console.error("Error loading Screenshots:", error);
+      });
+    return true;
+  });
+
+  let loadedPromise;
+
+  function loadIfNecessary() {
+    if (loadedPromise) {
+      return loadedPromise;
+    }
+    loadedPromise = Promise.resolve();
+    backgroundScripts.forEach(script => {
+      loadedPromise = loadedPromise.then(() => {
+        return new Promise((resolve, reject) => {
+          const tag = document.createElement("script");
+          tag.src = browser.runtime.getURL(script);
+          tag.onload = () => {
+            resolve();
+          };
+          tag.onerror = error => {
+            const exc = new Error(`Error loading script: ${error.message}`);
+            exc.scriptName = script;
+            reject(exc);
+          };
+          document.head.appendChild(tag);
+        });
+      });
+    });
+    return loadedPromise;
+  }
+
+  return exports;
+})();